Jim Simons
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Jim Simons’s Nkarta NKTX Stock Holding History

Jim Simons’s Portfolio NKTX Stock Details NKTX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$3.33M Sell
1,177,652
-554,720
-32% -$1.56M ﹤0.01% 1682
2026
Q1 		$3.66M Buy
1,732,372
+30,350
+2% +$67.9K 0.01% 1544
2025
Q4 		$3.15M Buy
1,702,022
+556,945
+49% +$1.11M ﹤0.01% 1610
2025
Q3 		$2.37M Buy
1,145,077
+448,705
+64% +$921K ﹤0.01% 1957
2025
Q2 		$1.16M Sell
696,372
-115,200
-14% -$211K ﹤0.01% 2429
2025
Q1 		$1.49M Buy
811,572
+54,497
+7% +$112K ﹤0.01% 2171
2024
Q4 		$1.89M Sell
757,075
-127,197
-14% -$393K ﹤0.01% 2096
2024
Q3 		$4M Sell
884,272
-28,600
-3% -$163K 0.01% 1585
2024
Q2 		$5.4M Buy
912,872
+98,000
+12% +$693K 0.01% 1246
2024
Q1 		$8.81M Buy
814,872
+157,100
+24% +$1.63M 0.01% 1062
2023
Q4 		$4.34M Buy
657,772
+145,200
+28% +$376K 0.01% 1443
2023
Q3 		$712K Buy
512,572
+188,572
+58% +$358K ﹤0.01% 2529
2023
Q2 		$710K Buy
324,000
+80,700
+33% +$355K ﹤0.01% 2687
2023
Q1 		$864K Buy
243,300
+9,600
+4% +$45.5K ﹤0.01% 2569
2022
Q4 		$1.4M Buy
233,700
+15,700
+7% +$158K ﹤0.01% 2316
2022
Q3 		$2.87M Sell
218,000
-187,600
-46% -$2.68M ﹤0.01% 1790
2022
Q2 		$5M Buy
405,600
+171,600
+73% +$2.25M 0.01% 1557
2022
Q1 		$2.66M Buy
234,000
+96,100
+70% +$1.03M ﹤0.01% 2006
2021
Q4 		$2.12M Buy
137,900
+107,300
+351% +$1.84M ﹤0.01% 2100
2021
Q3 		$851K Buy
+30,600
New +$970K ﹤0.01% 2637

Other funds holding NKTX

RA Capital Management
RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
NEA Management Company
NEA Management Company Timonium, Maryland $1.59B AUM 234.06% 1-Year Est. Return
Samsara BioCapital
Samsara BioCapital Palo Alto, California $1.22B AUM 242.83% 1-Year Est. Return
SR One Capital Management
SR One Capital Management Wayne, Pennsylvania $1.04B AUM 262.99% 1-Year Est. Return
GSK plc
GSK plc London $602M AUM
Monaco Asset Management
Monaco Asset Management Monaco $1.26B AUM 60.23% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Jim Simons's NKTX Position: Q2 2026 in Review

Jim Simons reduced its Nkarta (NKTX) stake by 32% in Q2 2026, selling an estimated $1.56M and leaving 1,177,652 shares worth $3.33M. The position accounts for ﹤0.01% of the portfolio, ranked #1682.

Jim Simons first reported a position in NKTX in Q3 2021 and has held it in 20 quarters since. The position peaked at $8.81M in Q1 2024. 135 funds tracked by Wall St. Rank hold NKTX as of Q2 2026.

  • Jim Simons held 1,177,652 shares of Nkarta worth $3.33M as of Q2 2026.
  • Jim Simons sold 554,720 Nkarta shares in Q2 2026, an estimated $1.56M.
  • Nkarta made up ﹤0.01% of Jim Simons's portfolio in Q2 2026, its #1682 holding.
  • Jim Simons first reported a position in Nkarta in Q3 2021 and has held it in 20 quarters since.
  • Jim Simons's Nkarta position peaked at $8.81M in Q1 2024.
  • 135 funds tracked by Wall St. Rank held Nkarta as of Q2 2026.

Based on Renaissance Technologies's 13F filing for Q2 2026, filed 13 Aug 2026.